Elevator control project design document for Machinery building

System hardware Interface Definition

The system hardware interface is composed of elevator motion control module, motor control module and elevator state display module.

Elevator Motion Control Module

Elevator door opening and closing need to set the travel switch, at the same time through the interface to connect the elevator door of the Open button to receive signal action, elevator door opening and closing button in motor movement can not be closed, only when the elevator static (motor does not turn) can be closed to control the elevator door action, Elevator door opening and closing two button should be interlocked implementation can not be closed at the same time, elevator door open and close by the elevator operating state control, when the elevator self-motion to stop by time relay delay 2s elevator door automatically open, when the elevator movement control elevator door closed switch must be closed, The elevator door closes when the button is received and the signal is pressed, and the time relay is disconnected when the Open button is pressed, and then re-timed when the next Close button is pressed.

Motor control Module

Elevator start and stop by AC asynchronous frequency conversion motor and inverter control, motor control elevator movement, through the interface to receive each floor elevator down CONTROL button signal and elevator internal 1-7 floor target Floor Control button signal control, At the same time, each floor is equipped with a travel switch to ensure that the elevator runs to the target floor when the accurate stop set position in the floor. As each floor elevator control signal may be contradictory, it is necessary to collect and store the signal through the interface of centralized timing control and two elevators assigned command signal, elevator uplink and downlink control signal through the interface to the motor and control the positive and negative rotation of the motor, the motor is turning power when the elevator, the elevator down the motor reverse charge, By the energy storage mechanism to achieve the storage and re-use, the motor start and stop to follow the uniform acceleration to a constant speed to the uniform deceleration process, the inverter control motor speed and movement process.

Elevator Status Display Module

Each floor of the elevator has "upstream" and "downlink" two buttons, two led digital tube respectively shows about two elevators on the floor, the digital tube each has an arrow LED lights indicating the elevator's operating state (up, down, stop), Therefore, each floor should be equipped with a lift down the direction of the control interface and the elevator is located on the floor of the indicator display interface. The display on the operating panel inside the elevator receives the information of the elevator floor information and the elevator operation status through the interface. The alarm button is set in the elevator, and when the alarm button is pressed, the alarm signal is sent to the main control room to send for help.

system function definition

Elevator function Requirements

1. When someone presses the uplink and downlink buttons on the floor, the elevator control system dispatches an elevator as soon as possible to reach the passenger's floor, elevator car in the floor after the delay of 2 seconds to open the elevator door, elevator door opened after 10 seconds delay elevator door automatically closed, during this time if someone pressed the Close button immediately close the elevator door.
2. In the elevator door close process, if someone in the outside press the same direction with the elevator button or someone in the car press the door button, the elevator door opened again, once the elevator door closed, then no longer respond to the button.
3. When the elevator operation is abnormal, by pressing the alarm button to send a distress signal to the general control room.

Elevator Display

Each floor is equipped with a display, the upper and lower arrows LED indicator on the display to indicate the current state of operation of the elevator, the elevator line on the arrow led light on, and the elevator down the arrow lights, while the elevator at rest when the two lights are not bright, LED digital tube digital display of the current elevator floor. The upstream and downstream buttons in the upper right-hand corner indicate whether the button is pressed, and the LED is always on when the button is pressed until any elevator stops on the floor. Elevator Internal Control Panel display also has up and down line arrow LED indicator to indicate the current operation status of the elevator, led digital tube digital display elevator current floor, and 1-7 target floor button and elevator door open Close button and alarm button in the upper right corner are equipped with indicators, when the button is pressed the first time the switch closed, The indicator light is on and the switch is off when it is pressed again, the indicator light is off.

Elevator control

The final command control signal of the elevator movement is determined by the control buttons of the 1-7 floors, the control buttons in the two elevators and the current motion state of the elevator. Elevator door opening and closing need to set the travel switch, at the same time through the interface to connect the elevator door of the Open button to receive signal action, elevator door opening and closing button switch in motor movement can not be closed, only when the elevator static (motor does not turn) can be closed to control the elevator door action, The opening and closing of the elevator door two buttons should be interlocked for the implementation cannot be closed at the same time. Elevator start and stop by AC asynchronous frequency conversion motor and inverter control, motor control elevator movement, through the interface to receive each floor elevator down CONTROL button signal and elevator internal 1-7 floor target Floor Control button signal control, At the same time, each floor is equipped with a travel switch to ensure that the elevator runs to the target floor when the accurate stop set position in the floor.

Elevator Dispatch

(1) When the elevator is in operation, the elevator priority response does not change the direction of operation of the control signal, and as far as possible to ensure that all the requested signal on the floor and target floor stop

(2) The control buttons of each floor respond according to the timing, that is, the request signal of the first button is given priority to get the elevator response.

(3) When both elevators are in a stationary state, elevator No. 1th (can customize which one elevator) priority response control signal; When an elevator is stationary an elevator moves, the still elevator responds to the unresponsive control signal, when both elevators are in a moving state, Each elevator responds to an unresponsive signal with (1) (2) Scheduling principle

Software function module decomposition and interface definition between modules

The SOFTWARE function module is divided into three parts: Elevator motion control module, motor control module and motor Status display module according to hardware interface definition. The elevator motion control module needs to set up the same control section in the 1-7-storey building, and also sets the same control part in the two elevators, and finally the final instruction and action are determined by the summary of the control information. The motor control module needs to carry on the design simulation and the control realization to the motor's variable speed process, simultaneously needs to carry on the energy storage and the energy dissipation process Control according to the motor positive and negative charge and discharge, the motor's start and stop control is determined by the elevator Motion control module final instruction action signal. The Motor status display module needs to set up the same display module in 1-7 floors and two elevators, the display signal of the display module is determined by the final instruction action signal of the elevator motion control module and the current state signal of the elevator.

Elevator control project design document for Machinery building